<template>
    <!-- 组件的结构 -->
    <div class="app">
        <button @click="isShow=!isShow">显示/隐藏</button>
        <transition-group name="hello" :appear="true">
            <h1 v-show="isShow" key="1">{{msg}}</h1>
            <h1 v-show="isShow" key="2">黑马</h1>
        </transition-group>
    </div>  
</template>

<script>
    export default{
            name:'Test2-show',
            data(){
                return{
                    msg:'欢迎学习Vue！！！',
                    isShow:true
                }
            },
            }
</script>

<style>
    h1{
        transition: 0.5s linear;
    }
    /* 进入的起点 离开的终点*/
    .hello-enter .hello-leave-to{
        transform: translateX(-100%);
    }
    /* .hello-enter-active .hello-leave-active{
        transition: 0.5s linear;
    } */
    /* 进入的终点 离开的起点*/
    .hello-enter-to .hello-leave{
        transform: translateX(0);
    }
</style>